Method and apparatus for the in-line production and conversion of composite strand material into a composite product

• US 5,914,080 A
• Filed: 08/12/1996
• Issued: 06/22/1999
• Est. Priority Date: 10/10/1995
• Status: Expired due to Fees

• Current Assignee: Owens- Corning Fiberglas Technology Incorporated (Owens Corning)
• Original Assignee: Owens- Corning Fiberglas Technology Incorporated (Owens Corning)
• Inventors: Glaser, Hellmut I., Macdonald, Frank J., Gauchel, James V., Woodside, Margaret
• Primary Examiner(s): Tentoni, Leo B.
• Application Number:
  US08/695,607
• Time in Patent Office: 1,044 Days
• Field of Search: 264/103, 264/148, 264/151, 264/171.13, 264/211.11, 264/257, 425/104, 425/106, 425/145, 425/297, 425/305.1, 425/377, 65/442, 65/447, 65/450, 65/452, 65/453, 65/480, 65/500, 65/529, 65/535, 65/536
• US Class Current: 264/103
• CPC Class Codes: B29B 15/122 with a matrix in liquid form, e.g. as melt, solution or latex
• CPC Class Codes: B29C 31/085 combined with positioning the preforms according to predetermined patterns, e.g. positioning extruded preforms on conveyors B29C70/30 takes precedence; for building tyres B29D30/08
• CPC Class Codes: B29C 70/16 using fibres of substantial or continuous length non-woven fabrics per se D04H3/00
• CPC Class Codes: B29C 70/305 Spray-up of reinforcing fibres with or without matrix to form a non-coherent mat in or on a mould B29C41/365, B29C70/32, B29C70/34, B29C70/502, B29C70/508 take precedence; coating a former by spraying plastics B29C41/08
• CPC Class Codes: B29C 70/38 Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns application heads for tyres B29D30/28

Abstract

A method and apparatus is provided for the in-line production of composite strand material and the conversion of at least a portion of the strand material into a composite product. The apparatus (10) includes a combining station (48) where glass fibers (14) with a second polymeric material (66) are combined to form composite strand material (16), and at least one mold (54) for receiving a portion of the composite strand material and forming the portion into a composite product. The apparatus also includes transfer equipment for moving the composite strand material from the combining station to the mold, which may include a computer-controlled robotic arm (52). In another embodiment, the apparatus includes a collecting device (18) for accumulating the composite strand material (16) in looped form and equipment for delivering the accumulated portion from the collecting device to the mold (54). In a further embodiment, the apparatus includes a chopping device (72) for chopping portions of the composite strand material prior to placement into the mold (54).

Claims

1. An in-line apparatus for making a composite strand material and forming at least a portion of said composite strand material into a composite product comprising:

a bushing for supplying streams of molten glass to be drawn into continuous first fibers;

a drawing device adapted to draw said streams into said first fibers;

equipment for supplying a polymeric material to said first fibers;

a combining station where said first fibers with said polymeric material are combined to form composite strand material, and

at least one mold disposed in-line with said bushing and said combining station for receiving a portion of said composite strand material and forming said portion into a composite product.

2. An in-line apparatus as set forth in claim 1, further comprising transfer equipment for moving said portion of said composite strand material from said combining station to said mold.

3. An in-line apparatus as set forth in claim 2, wherein said transfer equipment comprises a computer controlled robotic arm.

4. An in-line apparatus as set forth in claim 1, further comprising a collecting device for accumulating said portion of said composite strand material and equipment for delivering said accumulated portion from said collecting device to said mold.

5. An in-line apparatus as set forth in claim 4, wherein said collecting device comprises a rotatable wheel having a plurality of fingers projecting outwardly therefrom for forming axially extending loops in said portion of said composite strand material and a rotatable spinner and iris assembly which receive said axially extending loops and cause said loops to become intertwined with one another.

6. An in-line apparatus as set forth in claim 4, wherein said equipment for delivering comprises a computer controlled robotic arm.

7. An in-line apparatus as set forth in claim 1, wherein said drawing device comprises a pull wheel.

8. An in-line apparatus as set forth in claim 1, wherein said drawing device comprises a device for pulling said portion of composite strand material and chopping said portion into discrete lengths.

9. An in-line apparatus as set forth in claim 8, further comprising a hopper for accumulating said discrete lengths, and equipment for controlling the flow of said discrete lengths from said hopper to said mold.

10. An in-line apparatus as set forth in claim 9, wherein said equipment for controlling the flow of said discrete lengths comprises a flow control valve controlled by an automated device.

11. An in-line apparatus as set forth in claim 1, further comprising equipment for moving said mold from a first position away from said combining station to a second position adjacent said combining station where it receives said portion of said composite strand material.

12. An in-line apparatus as set forth in claim 1, wherein said supply equipment includes equipment for providing second fibers formed from said polymeric material.

13. An in-line apparatus as set forth in claim 12, further comprising one or more applicators for applying a size to said first and second fibers.

14. An in-line apparatus as set forth in claim 13, further comprising a drying device for contacting and transferring energy in the form of heat to said first and second sized fibers to dry the size on said first and second fibers before they are gathered into said composite strand material.

15. An in-line apparatus for the in-line production of composite strand material and the conversion of portions of said composite strand material into composite products comprising:

a heated bushing for supplying streams of molten glass to be drawn into continuous first fibers;

a drawing device adapted to draw said streams into said first fibers;

equipment for supplying a polymeric material to said first fibers;

a combining station where said first fibers with said polymeric material are combined to form composite strand material; and

a plurality of molds disposed in-line with said bushing and said combining station for receiving portions of said composite strand material and forming each of said portions into a composite product.

16. An in-line apparatus as set forth in claim 15, further comprising transfer equipment for moving said portions of said composite strand material from said combining station to said molds.

17. An in-line apparatus as set forth in claim 15, wherein said transfer equipment comprises a computer controlled robotic arm.

18. An in-line apparatus as set forth in claim 16, further comprising a collecting device for accumulating said portions of said composite strand material and equipment for delivering said accumulated portions from said collecting device to said molds.

19. An in-line apparatus as set forth in claim 15, wherein said drawing device comprises a pull wheel device.

20. An in-line apparatus as set forth in claim 15, wherein said drawing device comprises a device for pulling said portions of said composite strand material and chopping said portions into discrete lengths.

21. An in-line apparatus as set forth in claim 20, further comprising a hopper for accumulating said discrete lengths, and equipment for controlling the flow of said discrete lengths from said hopper to said molds.

22. An in-line apparatus as set forth in claim 15, further comprising equipment for moving said molds from a first position away from said combining station to a second position adjacent said combining station where said molds receive said portions of said composite strand material.

23. A method for the in-line production of composite strand material and the conversion of at least a portion of said composite strand material into a composite product comprising the steps of:

a) drawing a plurality of first fibers from a source of molten glass;

b) supplying a polymeric material to said first fibers;

c) combining said first fibers with said polymeric material at a combining station to form a composite strand material;

d) placing a portion of said composite strand material into a molding device which is disposed in-line with said source of molten glass; and

e) molding said portion into a composite product.

24. The method set forth in claim 23, wherein said forming device comprises a mold.

25. The method set forth in claim 24, wherein said placing step includes the step of moving said portion of said composite strand material from said combining station to said mold.

26. The method set forth in claim 24, wherein said placing step includes the step of moving said mold from a first position away from said combining station to a second position adjacent to said combining station where it receives said portion of said composite strand material.